The manufacturer calls these XL but they really are more for smaller dogs. They fit our Mini Aussie Perfectly. Please measure your dog to be sure. xLarge No Choke Fashion Print Harness Vests for Dogs - Free Matching Lead Included These Comfortable, Stylish Harness Vests are designed to fit most dog between 25 45 lbs. (May fit slightly smaller and/or larger depending on the Poochie's Measurements) Please Measure Your Dog! as there are no returns on these harnesses for Size Exchanges :-) Their neck should measure between 19 and 23 . Their Chest should measure between 21 26 . (add velcro to fit larger) No Choke Design walks the dog from the center of the back, not from their neck. Wide Strips of Velcro hold tight when the baby tries to pull. Available in 4 Stylish Designs. Order today and receive A FREE MATCHING LEAD! Exported By ExportYourStore Additional Details ------------------------------ Product description: The manufacturer calls these XL but they really are more for smaller dogs. They fit our Mini Aussie Perfectly. Please measure your dog to be sure. xLarge No Choke Fashion Print Harness Vests for Dogs - Free Matching Lead Included These Comfortable, Stylish Harness Vests are designed to fit most dog between 25 45 lbs. (May fit slightly smaller and/or larger depending on the Poochie's Measurements) Please Measure Your Dog! as there are no returns on these harnesses for Size Exchanges :-) Their neck should measure between 19 and 23 . Their Chest should measure between 21 26 . (add velcro to fit larger) No Choke Design walks the dog from the center of the back, not from their neck. Wide Strips of Velcro hold tight when the baby tries to pull. Available in 4 Stylish Designs. Order today and receive A FREE MATCHING LEAD! Exported By ExportYourStore